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cond-mat.str-el2006★ 41 cited
Entanglement in extended Hubbard models and quantum phase transitions
Alberto Anfossi, Paolo Giorda, Arianna Montorsi
The role of two-point and multipartite entanglement at quantum phase transitions (QPTs) in correlated electron systems is investigated. We consider a bond-charge extended Hubbard m…
cond-mat.str-el2005
Two-Point Versus Multipartite Entanglement in Quantum Phase Transitions
Alberto Anfossi, Paolo Giorda, Arianna Montorsi +1
We analyze correlations between subsystems for an extended Hubbard model exactly solvable in one dimension, which exhibits a rich structure of quantum phase transitions (QPTs). The…